PROBLEM TO BE SOLVED: To provide an X-ray imaging apparatus which shortens a photographing interval between each of fluoroscopic images.SOLUTION: An X-ray imaging apparatus 1 for photographing a plurality of fluoroscopic images to create a subtraction image from a difference between each of the fluoroscopic images, includes: an X-ray tube 2 that irradiates a subject with X-rays an X-ray plane detector 4 that detects the X-rays passed through the subject and an irradiation start time-calculating unit 9 that calculates a photographing start time of a first fluoroscopic image on the basis of an end time of an integration period of the X-ray plane detector 4 for the first fluoroscopic image or a start time of the integration period of the X-ray plane detector 4 for a second fluoroscopic image.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】各透視画像の撮影間隔を短縮するX線撮影装置を提供する。【解決手段】 複数枚の透視像を撮影して各透視像の差分からサブトラクション像を作成するX線撮影装置1において、被検体にX線を照射するX線管2と、被検体を透過したX線を検出するX線平面検出器4と、透視撮影1枚目におけるX線平面検出器4の積分期間の終了時期または透視撮影2枚目におけるX線平面検出器4の積分期間の開始時期を基に1枚目の撮影開始時期を算出する照射開始時期算出部9とを備える。【選択図】図1
